Add Common Helm Chart "mariadb-galera"

A new common helm chart that will deploy a Galera cluster for MariaDB.
Please note that this chart is still work in progress and more features
will be added or improved.

Change-Id: Ia4487666798f83d2869c35bcfaacc5516068f194
Issue-ID: OOM-758
Signed-off-by: vitalied <vitalied@amdocs.com>

7 files changed, 267 insertions, 0 deletions

diff --git a/kubernetes/common/mariadb-galera/templates/NOTES.txt b/kubernetes/common/mariadb-galera/templates/NOTES.txt
new file mode 100644
index 0000000000..3dd25ac4b7
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/NOTES.txt
@@ -0,0 +1,12 @@
+MariaDB-Galera service can be accessed via port 3306 on the following DNS name from within your cluster:
+{{ include "common.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local
+
+To connect to your database:
+
+1. Run a pod that you can use as a client:
+
+    kubectl run {{ include "common.fullname" . }}-client --rm --tty -i --image mariadb --command -- bash
+
+2. Connect using the mysql cli, then provide your password:
+    $ mysql -h {{ include "common.fullname" . }} {{- if .Values.mysqlRootPassword }} -p {{ .Values.mysqlRootPassword }}{{- end -}}
+
diff --git a/kubernetes/common/mariadb-galera/templates/configmap.yaml b/kubernetes/common/mariadb-galera/templates/configmap.yaml
new file mode 100644
index 0000000000..094a76cf45
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/configmap.yaml
@@ -0,0 +1,18 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "common.fullname" . }}-confd
+  namespace: {{ include "common.namespace" . }}
+data:
+{{ tpl (.Files.Glob "resources/config/mariadb/conf.d/*").AsConfig . | indent 2 }}
+---
+{{- if .Values.externalConfig }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "common.fullname" . }}-externalConfig
+  namespace: {{ include "common.namespace" . }}
+data:
+  my_extra.cnf: |-
+{{ toYaml .Values.externalConfig | indent 4 }}
+{{- end -}}
\ No newline at end of file
diff --git a/kubernetes/common/mariadb-galera/templates/pv.yaml b/kubernetes/common/mariadb-galera/templates/pv.yaml
new file mode 100644
index 0000000000..184728f8ad
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/pv.yaml
@@ -0,0 +1,37 @@
+{{/*
+# Copyright © 2017 Amdocs, Bell Canada
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+kind: PersistentVolume
+apiVersion: v1
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version | replace "+" "_" }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+    name: {{ include "common.fullname" . }}
+spec:
+  capacity:
+    storage: {{ .Values.persistence.size}}
+  accessModes:
+    - {{ .Values.persistence.accessMode }}
+  persistentVolumeReclaimPolicy: {{ .Values.persistence.volumeReclaimPolicy }}
+  hostPath:
+    path: {{ .Values.global.persistence.mountPath | default .Values.persistence.mountPath }}/{{ .Release.Name }}/{{ .Values.persistence.mountSubPath }}
+{{- end -}}
diff --git a/kubernetes/common/mariadb-galera/templates/pvc.yaml b/kubernetes/common/mariadb-galera/templates/pvc.yaml
new file mode 100644
index 0000000000..e27c3311e9
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/pvc.yaml
@@ -0,0 +1,48 @@
+{{/*
+# Copyright © 2017 Amdocs, Bell Canada
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#       http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+*/}}
+
+{{- if and .Values.persistence.enabled (not .Values.persistence.existingClaim) -}}
+kind: PersistentVolumeClaim
+apiVersion: v1
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+{{- if .Values.persistence.annotations }}
+  annotations:
+{{ toYaml .Values.persistence.annotations | indent 4 }}
+{{- end }}
+spec:
+  selector:
+    matchLabels:
+      name: {{ include "common.fullname" . }}
+  accessModes:
+    - {{ .Values.persistence.accessMode }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+{{- if .Values.persistence.storageClass }}
+{{- if (eq "-" .Values.persistence.storageClass) }}
+  storageClassName: ""
+{{- else }}
+  storageClassName: "{{ .Values.persistence.storageClass }}"
+{{- end }}
+{{- end }}
+{{- end -}}
diff --git a/kubernetes/common/mariadb-galera/templates/secrets.yaml b/kubernetes/common/mariadb-galera/templates/secrets.yaml
new file mode 100644
index 0000000000..101a7eba79
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/secrets.yaml
@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.name" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+type: Opaque
+data:
+  db-root-password: {{ .Values.config.mariadbRootPassword | b64enc | quote }}
+  user-password: {{ default "" .Values.config.userPassword | b64enc | quote }}
\ No newline at end of file
diff --git a/kubernetes/common/mariadb-galera/templates/service.yaml b/kubernetes/common/mariadb-galera/templates/service.yaml
new file mode 100644
index 0000000000..f5f93ed9b6
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/service.yaml
@@ -0,0 +1,19 @@
+apiVersion: v1
+kind: Service
+metadata:
+  annotations:
+    service.alpha.kubernetes.io/tolerate-unready-endpoints: "true"
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.fullname" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+spec:
+  ports:
+    - name: {{ .Values.service.name }}
+      port: {{ .Values.service.internalPort }}
+  clusterIP: None
+  selector:
+    app: {{ include "common.fullname" . }}
\ No newline at end of file
diff --git a/kubernetes/common/mariadb-galera/templates/statefulset.yaml b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
new file mode 100644
index 0000000000..b8ba75e52c
--- /dev/null
+++ b/kubernetes/common/mariadb-galera/templates/statefulset.yaml
@@ -0,0 +1,119 @@
+apiVersion: apps/v1beta1
+kind: StatefulSet
+metadata:
+  name: {{ include "common.fullname" . }}
+  namespace: {{ include "common.namespace" . }}
+  labels:
+    app: {{ include "common.fullname" . }}
+    chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+    release: "{{ .Release.Name }}"
+    heritage: "{{ .Release.Service }}"
+spec:
+  serviceName: {{ include "common.fullname" . }}
+  replicas: {{ .Values.replicaCount }}
+  template:
+    metadata:
+      labels:
+        app: {{ include "common.fullname" . }}
+      annotations:
+        pod.alpha.kubernetes.io/initialized: "true"
+    spec:
+    {{- if .Values.nodeSelector }}
+      nodeSelector:
+{{ toYaml .Values.nodeSelector | indent 8 }}
+    {{- end }}
+      volumes:
+      {{- if .Values.externalConfig }}
+        - name: config
+          configMap:
+            name: {{ include "common.fullname" . }}-externalConfig
+      {{- end}}
+        - name: localtime
+          hostPath:
+            path: /etc/localtime
+      imagePullSecrets:
+      - name: {{ include "common.namespace" . }}-docker-registry-key
+      containers:
+        - name: {{ include "common.fullname" . }}
+          image: "{{ .Values.global.repository | default .Values.repository }}/{{ .Values.image }}"
+          imagePullPolicy: {{ .Values.global.pullPolicy | default .Values.pullPolicy | quote}}
+          env:
+            - name: POD_NAMESPACE
+              valueFrom:
+                fieldRef:
+                  apiVersion: v1
+                  fieldPath: metadata.namespace
+            - name: MYSQL_USER
+              value: {{ default "" .Values.config.userName | quote }}
+            - name: MYSQL_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ template "common.fullname" . }}
+                  key: user-password
+            - name: MYSQL_DATABASE
+              value: {{ default "" .Values.config.mysqlDatabase | quote }}
+            - name: MYSQL_ROOT_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ template "common.fullname" . }}
+                  key: db-root-password
+          ports:
+          - containerPort: {{ .Values.service.internalPort }}
+            name: {{ .Values.service.name }}
+          - containerPort: {{ .Values.service.sstPort }}
+            name: {{ .Values.service.sstName }}
+          - containerPort: {{ .Values.service.replicationPort }}
+            name: {{ .Values.service.replicationName }}
+          - containerPort: {{ .Values.service.istPort }}
+            name: {{ .Values.service.istName }}
+          readinessProbe:
+            exec:
+              command:
+              - /usr/share/container-scripts/mysql/readiness-probe.sh
+            initialDelaySeconds: {{ .Values.readiness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.readiness.periodSeconds }}
+      {{- if eq .Values.liveness.enabled true }}
+          livenessProbe:
+            exec:
+              command: ["mysqladmin", "ping"]
+            initialDelaySeconds: {{ .Values.liveness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.liveness.periodSeconds }}
+            timeoutSeconds: {{ .Values.liveness.timeoutSeconds }}
+      {{- end }}
+          resources:
+{{ toYaml .Values.resources | indent 12 }}
+          volumeMounts:
+        {{- if .Values.externalConfig }}
+          - mountPath: /etc/config
+            name: config
+        {{- end}}
+          - mountPath: /etc/localtime
+            name: localtime
+            readOnly: true
+{{- if .Values.persistence.enabled }}
+          - mountPath: /var/lib/mysql
+            name: {{ include "common.fullname" . }}-data
+            subPath: data
+      initContainers:
+        - name: mariadb-galera-prepare
+          image: {{ .Values.global.repository | default .Values.repository }}/{{ .Values.imageInit }}
+          command: ["sh", "-c", "chown -R 27:27 /var/lib/mysql"]
+          volumeMounts:
+            - name: {{ include "common.fullname" . }}-data
+              mountPath: /var/lib/mysql
+  volumeClaimTemplates:
+  - metadata:
+      name: {{ include "common.fullname" . }}-data
+      annotations:
+  {{- if .Values.persistence.storageClass }}
+        volume.beta.kubernetes.io/storage-class: {{ .Values.persistence.storageClass | quote }}
+  {{- else }}
+        volume.alpha.kubernetes.io/storage-class: default
+  {{- end }}
+    spec:
+      accessModes:
+      - {{ .Values.persistence.accessMode | quote }}
+      resources:
+        requests:
+          storage: {{ .Values.persistence.size | quote }}
+{{- end }}
\ No newline at end of file